"Petrosilex" is a word in ENGLISH

petrosilex ENGLISH
Definition:

Felsite.

Few words of positivity

The first duty of a lecturer- to hand you after an hour's discourse a nugget of pure truth to wrap up between the pages of your notebooks and keep on the mantelpiece for ever.

Virginia Woolf

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Laugh your heart out.

What does Father Christmas call his money ?Iced lolly ?

euritte ENGLISH

A compact feldspathic rock; felsite. See Felsite.

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felsite ENGLISH

A finegrained rock, flintlike in fracture, consisting essentially of orthoclase feldspar with occasional grains of quartz.

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felsitic ENGLISH

relating to, composed of, or containing, felsite.

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felstone ENGLISH
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